<template>
  <div class="countdown-wrap">
    <span :endTime="endTime" :callback="callback" :endText="endText">
      <slot>{{content}}</slot>
    </span>
  </div>
</template>
<script>
export default {
  name: "Countdown",
  data() {
    return {
      content: ""
    };
  },
  props: {
    endTime: {
      type: Number,
      default: 0
    },
    endText: {
      type: String,
      default: "已开始"
    },
    callback: {
      type: Function,
      default: ""
    }
  },
  mounted() {
    if (this.endTime) {
      // console.log("开抢时间", this.endTime);
      this.countdowm(this.endTime);
      // this.countdowm(20);
    }
  },
  methods: {
    countdowm(timestamp) {
      let self = this;
      let timer = setInterval(function() {
        let nowTime = new Date();
        let endTime = new Date(timestamp * 1000);
        // let t = endTime.getTime() - nowTime.getTime();
        timestamp--;
        let t = timestamp * 1000;
        if (t > 0) {
          let day = Math.floor(t / 86400000);
          let hour = Math.floor((t / 3600000) % 24);
          let min = Math.floor((t / 60000) % 60);
          let sec = Math.floor((t / 1000) % 60);
          hour = hour < 10 ? "0" + hour : hour;
          min = min < 10 ? "0" + min : min;
          sec = sec < 10 ? "0" + sec : sec;
          let format = "";
          if (day > 0) {
            format = `${day}天${hour}小时${min}分${sec}秒`;
          }
          if (day <= 0 && hour > 0) {
            format = `${hour}小时${min}分${sec}秒`;
          }
          if (day <= 0 && hour <= 0) {
            format = `${min}分${sec}秒`;
          }
          self.content = format;
        } else {
          clearInterval(timer);
          self.content = self.endText;
          if (self.$route.path != "/agency") {
            self._callback();
          }
        }
      }, 1000);
    },
    _callback() {
      if (this.callback && this.callback instanceof Function) {
        console.log("callback");
        this.callback(this);
      }
    }
  }
};
</script>